package main //跟文件名无关，main函数所在的包叫这个名

import "fmt"

const BEIJING = 15
const (
	HEBEI = iota
	HEBEI_2 = iota
)
const (
	NEWHB = iota
)



func main() {
	fmt.Println("hell Golang !")
	var a int
	a = 100
	slice_a := make([]int,2)
//	slice_a[0] = 5
	slice_a = append(slice_a,66)
	fmt.Println(a)
	fmt.Println("河北 ", HEBEI,"河北2 ",HEBEI_2)
	fmt.Println("北京 ", BEIJING)
	fmt.Println("new河北", NEWHB)
	var xx string = "BEIJING" + "HEBEI"
	fmt.Println(xx)
	fmt.Printf("%d,%d,%v",len(slice_a),cap(slice_a),slice_a)

}
